Here are a few nuggets from Vivekananda’s lectures. The reason why these seem somewhat abrupt is because he gave the lectures.. and one of his American followers had documented those lectures verbatim!!
Mass & Energy
“The Whole Universe is a mass of energy, and it is present at every point. One grain is enough for all of us, if we know how to get what there is…”
Prana and Death
“At death all the senses go into the mind and the mind goes into the Prana, vitality. The soul goes out and carries part of the mind out with him. He carries a certain part of the vitality, and he carries a certain amount of very fine material also, as the germ of the spiritual body. The Prana cannot exist without some sort of Vehicle… it gets lodgement in th ethoughts, and it will come out again. So you manufacture this new body and new brain. Through it will manifest…”